Recumbent exercise bicycle



FIG. 1 is a rear perspective view of a recumbent exercise bicycle showing my new design;

FIG. 2 is a right side elevational view thereof, the side opposite being substantially a mirror image;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a top plan view thereof. 

The ornamental design for a recumbent exercise bicycle, as shown and described. 